Hey, we are doing a mapping project in eastern Ohio and I am curious what is the statutory unit of measure for the Ohio State Plane Coordinate system? International foot or survey foot? Thanks in advance.
Looks like U.S. Survey Feet.
Loyal
Thanks Loyal
I was looking for it on the interwebs, but I wasn't getting what I was looking for.
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Ohio Revised Code Chapter 157 is the adopting legal authority and Loyal had the update adopting the U.S. Survey Foot. Have been driving this into our students heads since the update.
What area of eastern Ohio? You may trip over some of my twenty five year old work.
It is the U.S. Survey Foot. What part of Ohio are you working in? We cover quite a bit of ground in eastern and southern Ohio. Our office is in the southern part of the state, on the banks of the mighty Ohio River.
What is the statutory unit of measure for the Ohio State Plane Coordinate system? International foot or survey foot? Neither, it is the metre.
157.03 Plane co-ordinates - description. The plane co-ordinates of a point on the earth’s surface, to be used in expressing the position or location of such point in the appropriate zone of the systems specified in section 157.01 of the Revised Code, shall consist of two distances, expressed in United States survey feet and decimals of a United States survey foot when using the Ohio co-ordinate system of 1927, and expressed in metres and decimals of a metre when using the Ohio co-ordinate system of 1983. One of these distances, known as the “x co-ordinate,” shall give the position in an east and west direction; the other, known as the “y co-ordinate,” shall give the position in a north and south direction. These co-ordinates shall be made to depend upon and conform to plane rectangular co-ordinate values for the monumented points of the North American horizontal geodetic control network as published by the United States department of commerce and whose plane co-ordinates have been computed on the systems defined in this chapter. Any such station may be used for establishing a survey connection to either Ohio co-ordinate system.
Effective Date: 10-01-1985
Federal Register /Vol. 72, No. 42 9737
The National Geodetic Survey (NGS) will publish North American Datum of 1983 (NAD 83) State Plane
Coordinate (SPC) grid values in both meters and U.S. Survey Feet (1 ft = 1200/3937 m) in Ohio, for all well
defined geodetic survey control monuments maintained by NGS in the National Spatial Reference System (NSRS) and
computed for various geodetic positioning utilities. The adoption of this standard is implemented in accordance with NGS policy and a request from the Ohio Department of Transportation (ODOT), the Professional Land Surveyors of Ohio (PLSO), the Ohio Geographically Referenced Information Program (OGRIP), and the County Engineers Association of Ohio (CEAO).
157.11 Ohio co-ordinate system of 1983.
In accordance with sections 157.01 to 157.10 of the Revised Code, the Ohio co-ordinate system of 1927 shall not be used after 1999 and the Ohio co-ordinate system of 1983 shall be used after that date.
The United States survey foot is the one obtained from NGS datasheets, and is commonly used.
More SPCS confusion!!
Amazing - simply amazing...
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West/northwest of Stuebenville. Mapping some awlfield sites.
I haven't been in the field there but would like to since our family settled in Leetonia in the 1840s with Jakob Nold being the first Mennonite Bishop into Ohio, as I understand.
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If you do get a chance to get up there, try to get up to East Liverpool. I think it's about a 20 minute drive north. That's where the initial point is for the PLSS.
